What is SAR?
What is SAR?
Specific Absorption Rate (SAR) is the rate at which electromagnetic power radiated from mobile handsets and towers is absorbed by the human body.
SOIL AS A NUTRIENT RESERVOIR
SOIL AS A NUTRIENT RESERVOIR -Soil colloids serve to maintain a reserve of soluble nutrient in the soil. - the colloid compound of soil consisting of clay particle and humus. - sand, slit and clay which are difference on the basis of particle size from the mineral compound in the soil -A part from clay,also contain a colloidal carbonaceous residue called humus. -Humus is an organic materiel that has been slowly but incompletely degraded to a colloidal dimension through the action of weathering and micro organism which make great contribution to the nutrient reservoir
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